Hardware Spec Index

Caldera SN-6659 XT 2TB PCIe 3.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN6659-XT · Released 2019 · Updated 2026-10-22

Key facts

Benchmark index8,701 (SSDs scale)
Category rank#41,545
Street price$189
Power4 W (active)
Performance per dollar46.04
Released2019

Specifications

BrandCaldera
ModelCaldera SN-6659 XT
Capacity2 TB
Form factorM.2 2280
InterfacePCIe 3.0 x4, NVMe 1.4
Sequential read2,100 MB/s
Sequential write1,900 MB/s
Random 4K read540K IOPS
NAND3D TLC, 176-layer
CacheDDR4 DRAM, 2 GB
Endurance1,200 TBW (0.33 DWPD)
Warranty5 years
HeatsinkNone

Related guides

NVMe SSDs ExplainedM.2 SSD Sizes and KeysSSD Endurance ExplainedDRAM vs DRAM-less SSDsPCIe 4.0 vs PCIe 5.0

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Cite this page: Hardware Spec Index, “Caldera SN-6659 XT 2TB PCIe 3.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/5650409 (accessed 2026-10-22).